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Subject: Re: Mate in 12 ....

Author: Miguel A. Ballicora

Date: 09:11:26 01/07/02

Go up one level in this thread


On January 07, 2002 at 11:22:18, Robert Basham wrote:

>Extreme Chess takes 15 ply and 42 sec. to find
>1. Rh8+...! but then has trouble playing it out to the end...
>
>(The same kind of problem occurs with Hiarcs7 also)...
>
>[D]qn1rn1k1/2rp2N1/2b1p1K1/4Bp2/p7/1p6/2p5/7R w - -


Gaviota 0.2.4 experimental on PIV 1.4 Ghz. sees mate in 12 in 8 seconds.

qn1rn1k1/2rp2N1/2b1p1K1/4Bp2/p7/1p6/2p5/7R w - - 0 1
+-----------------+
| q n . r n . k . |
| . . r x . . N . |
| . . b . x . K . |
| . . . . B x . . |
| x . . . . . . . |
| . x . . . . . . |
| . . x . . . . . |
| . . . . . . . R |
+-----------------+

legal moves available = 31
       126   1       0.0   -41.89  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8xc7
       213   1:      0.0   -41.89  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8xc7
       226   2       0.0      :-)  Rh1-h8
       811   2       0.0      :-)  Rh1-h8
       946   2       0.0    +0.00  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-e8
      1036   2:      0.0    +0.00  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-e8
      2085   3       0.0    +0.00  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-e8
      2301   3:      0.0    +0.00  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-e8
      4328   4       0.0    +0.00  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-e8
      6323   4:      0.1    +0.00  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-e8
      9726   5       0.1    +0.00  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-e8
     13079   5:      0.1    +0.00  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-e8
     24766   6       0.2    +0.00  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-e8
     31193   6:      0.2    +0.00  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-e8
     47380   7       0.3      :-)  Rh1-h8
     68272   7       0.5    +0.00  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-g4   Kh8-g8
                                   Ng4-f6
    856561   7:      7.3    +0.00  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-g4   Kh8-g8
                                   Ng4-f6
    870489   8       7.5      :-)  Rh1-h8
    965072   8       8.2  +Mat_12  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-g4   Kh8-g8
                                   Ng4-h6   Kg8-f8   Be5-d6   Kf8-e8
                                   Nh6-g8   Rd8-c8   Ng8-f6   Ke8-d8
                                   Kg6-f7   Rc7-b7   Nf6-e8   Rc8-c7
                                   Bd6-e7   Kd8-c8   Ne8-d6
   1335029   8:     11.1  +Mat_12  Rh1-h8   Kg8xh8   Ng7xe8   Kh8-g8
                                   Ne8-f6   Kg8-h8   Nf6-g4   Kh8-g8
                                   Ng4-h6   Kg8-f8   Be5-d6   Kf8-e8
                                   Nh6-g8   Rd8-c8   Ng8-f6   Ke8-d8
                                   Kg6-f7   Rc7-b7   Nf6-e8   Rc8-c7
                                   Bd6-e7   Kd8-c8   Ne8-d6



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